Ink jet recording head and ink jet recording apparatus
US6336717B1 · kind B1 · utility
47Cited by
4References
54Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1999 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Jun 7, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/11
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet recording head comprises a pressure generating chamber communicating with a nozzle opening, and a piezoelectric element a lower electrode provided on an area facing the pressure generating chamber via an insulating layer, a piezoelectric layer provided on the lower electrode, and an upper electrode provided on the piezoelectric layer. At least both ends of the lower electrode in a width direction thereof are positioned within the area facing the pressure generating chamber, and the piezoelectric layer covers sides of both ends of the lower electrode in the width direction thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.